What is the relation between the internal energy and heat supplied in the process 1 & 2 shown in the diagram? Both paths start at A and end at B.

MCQs on thermal equilibrium, zeroth law of thermodynamics, heat, internal energy and work, thermodynamics first and second law, thermodynamic processes, heat engines, heat pumps and refrigerators, carnot engine, thermodynamics specific heat capacity, reversible and irreversible processes.